/*
 * Copyright (C) 2011 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.moxiu.browser;

import java.lang.reflect.Field;
import java.util.ArrayList;

import android.app.ActionBar;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentTransaction;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Color;
import android.graphics.PorterDuff.Mode;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Bundle;
import android.support.v13.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewConfiguration;
import android.view.ViewGroup.LayoutParams;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.moxiu.browser.UI.ComboViews;
import com.moxiu.browser.view.BrowserViewPager;
import com.moxiu.launcher.R;
import com.moxiu.launcher.R.drawable;

public class ComboViewActivity extends Activity implements CombinedBookmarksCallbacks {

    private static final String STATE_SELECTED_TAB = "tab";
    public static final String EXTRA_COMBO_ARGS = "combo_args";
    public static final String EXTRA_INITIAL_VIEW = "initial_view";

    public static final String EXTRA_OPEN_SNAPSHOT = "snapshot_id";
    public static final String EXTRA_OPEN_ALL = "open_all";
    public static final String EXTRA_CURRENT_URL = "url";
    private BrowserViewPager mViewPager;
    private TabsAdapter mTabsAdapter;
    public static Fragment fg;
    
    private TextView backActionBarTv;
    private ImageView backActionBarIv;
    private Drawable menuFeedBackDrawable,bookmarksDrawable,bookhistoryDrawable;
    
    public interface OnBackKeyPress{
    	public void backKeyPress(boolean isEdit);
    }
    
    OnBackKeyPress onBackKeyPress = null;
    
    public void setOnBackKeyPress(OnBackKeyPress obkp){
    	onBackKeyPress = obkp;
    }
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setResult(RESULT_CANCELED);
        //getOverflowMenu();
        setTitle("书签");
        Bundle extras = getIntent().getExtras();
        Bundle args = extras.getBundle(EXTRA_COMBO_ARGS);
        String svStr = extras.getString(EXTRA_INITIAL_VIEW, null);
        ComboViews startingView = svStr != null
                ? ComboViews.valueOf(svStr)
                : ComboViews.Bookmarks;
        mViewPager = new BrowserViewPager(this);
        args.putParcelable("mViewPager", mViewPager);
        mViewPager.setId(R.id.tab_view);
        View view = getLayoutInflater().inflate(R.layout.br_actionbar_title, null);
        backActionBarTv = (TextView) view.findViewById(R.id.back_actionbar_tv);
        backActionBarIv = (ImageView) view.findViewById(R.id.back_actionbar_iv);
        FrameLayout fra=(FrameLayout)view.findViewById(R.id.br_actionb);
        SharedPreferences preferences = getSharedPreferences("default_night",
      			MODE_PRIVATE);
      boolean	blFlag = preferences.getBoolean("default_night", false);  

      menuFeedBackDrawable = getResources().getDrawable(R.drawable.br_menu_feedback_black_backhome);
      bookmarksDrawable= getResources().getDrawable(R.drawable.br_unselected_bookmarks);
      bookhistoryDrawable= getResources().getDrawable(R.drawable.br_unselected_history);
      	if(blFlag){
      		if(view!=null){
      		view.setBackgroundColor(getResources().getColor(R.color.br_dialog_night_bg_view));
      		}
      		setTheme(R.style.CustomActionBarNightTheme);
      		backActionBarTv.setTextColor(getResources().getColor(R.color.br_dialog_night_text_view));
      		menuFeedBackDrawable.setColorFilter(getResources().getColor(R.color.br_dialog_night_text_view), Mode.SRC_IN);
      		bookmarksDrawable.setColorFilter(getResources().getColor(R.color.br_dialog_night_text_view), Mode.SRC_IN);
      		bookhistoryDrawable.setColorFilter(getResources().getColor(R.color.br_dialog_night_text_view), Mode.SRC_IN);
      	}else{
      		if(view!=null){
      		view.setBackgroundColor(Color.WHITE);
      		}
      		setTheme(R.style.CustomActionBarTheme);
      		backActionBarTv.setTextColor(getResources().getColor(R.color.moxiu_title_text));
      		menuFeedBackDrawable.setColorFilter(Color.BLACK, Mode.SRC_IN);
      	}
      	backActionBarIv.setImageDrawable(menuFeedBackDrawable);
      	
        final ActionBar bar = getActionBar();
        bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
        bar.setDisplayShowHomeEnabled(true);
        bar.setDisplayShowCustomEnabled(true);
        bar.setHomeButtonEnabled(false);      
//        bar.setBackgroundDrawable(getResources().getDrawable(R.color.br_dialog_night_bg));        
      	if(blFlag){		      		
      		 bar.setBackgroundDrawable(getResources().getDrawable(R.color.br_dialog_night_bg_view));
      	}else{     		
      		 bar.setBackgroundDrawable(getResources().getDrawable(R.color.white));
      	}         
        view.setLayoutParams(new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
        bar.setCustomView(view);
     
        
        setContentView(mViewPager);
       bar.setIcon(R.drawable.click_circle_anim);
        
        mTabsAdapter = new TabsAdapter(this, mViewPager);
//        mTabsAdapter.addTab(bar.newTab().setText(R.string.tab_bookmarks),
//                BrowserBookmarksPage.class, args);
        	mTabsAdapter.addTab(bar.newTab().setIcon(R.drawable.br_selected_bookmarks), BrowserBookmarksPage.class, args);
//        mTabsAdapter.addTab((bar.newTab()).setText(R.string.tab_history), BrowserHistoryPage.class, args);
        	mTabsAdapter.addTab(bar.newTab().setIcon(R.drawable.br_unselected_history), BrowserHistoryPage.class, args);
        if (savedInstanceState != null) {
            bar.setSelectedNavigationItem(
                    savedInstanceState.getInt(STATE_SELECTED_TAB, 0));
        } else {
            switch (startingView) {
            case Bookmarks:
                mViewPager.setCurrentItem(0);
                break;
            case History:
                mViewPager.setCurrentItem(1);
                break;
            case Snapshots:
                mViewPager.setCurrentItem(2);
                break;
            }
        }
        
        view.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View arg0) {
				finish();
			}
		});
    }
    
    @Override
    protected void onRestart() {
    	mTabsAdapter.notifyDataSetChanged();
    	super.onRestart();
    }

    
    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putInt(STATE_SELECTED_TAB,
                getActionBar().getSelectedNavigationIndex());
    }

    @Override
    public void openUrl(String url) {
        Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
        setResult(RESULT_OK, i);
        finish();
    }

    @Override
    public void openInNewTab(String... urls) {
        Intent i = new Intent();
        i.putExtra(EXTRA_OPEN_ALL, urls);
        setResult(RESULT_OK, i);
        finish();
    }

    @Override
    public void close() {
        finish();
    }

    @Override
    public void openSnapshot(long id) {
        Intent i = new Intent();
        i.putExtra(EXTRA_OPEN_SNAPSHOT, id);
        setResult(RESULT_OK, i);
        finish();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.br_combined, menu);
        return super.onCreateOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
//    	System.out.println("menu");
//        if (item.getItemId() == android.R.id.home) {
//            finish();
//            return true;
//        } else if (item.getItemId() == R.id.preferences_menu_id) {
//            String url = getIntent().getStringExtra(EXTRA_CURRENT_URL);
//            Intent intent = new Intent(this, BrowserPreferencesPage.class);
//            intent.putExtra(BrowserPreferencesPage.CURRENT_PAGE, url);
//            startActivityForResult(intent, Controller.PREFERENCES_PAGE);
//            return true;
//        }
        return super.onOptionsItemSelected(item);
    }
    
    private void getOverflowMenu() {
        try {
           ViewConfiguration config = ViewConfiguration.get(this);
           Field menuKeyField = ViewConfiguration.class.getDeclaredField("sHasPermanentMenuKey");
           if(menuKeyField != null) {
               menuKeyField.setAccessible(true);
               menuKeyField.setBoolean(config, false);
           }
       } catch (Exception e) {
           e.printStackTrace();
       }
   }

    /**
     * This is a helper class that implements the management of tabs and all
     * details of connecting a ViewPager with associated TabHost.  It relies on a
     * trick.  Normally a tab host has a simple API for supplying a View or
     * Intent that each tab will show.  This is not sufficient for switching
     * between pages.  So instead we make the content part of the tab host
     * 0dp high (it is not shown) and the TabsAdapter supplies its own dummy
     * view to show as the tab content.  It listens to changes in tabs, and takes
     * care of switch to the correct page in the ViewPager whenever the selected
     * tab changes.
     */
    public static class TabsAdapter extends FragmentPagerAdapter
            implements ActionBar.TabListener, ViewPager.OnPageChangeListener {
        private final Context mContext;
        private final ActionBar mActionBar;
        private final BrowserViewPager mViewPager;
        private final ArrayList<TabInfo> mTabs = new ArrayList<TabInfo>();

        static final class TabInfo {
            private final Class<?> clss;
            private final Bundle args;

            TabInfo(Class<?> _class, Bundle _args) {
                clss = _class;
                args = _args;
            }
        }

        public TabsAdapter(Activity activity, BrowserViewPager pager) {
            super(activity.getFragmentManager());
            mContext = activity;
            mActionBar = activity.getActionBar();
            mViewPager = pager;
            mViewPager.setAdapter(this);
            mViewPager.setOnPageChangeListener(this);
        }

        public void addTab(ActionBar.Tab tab, Class<?> clss, Bundle args) {
            TabInfo info = new TabInfo(clss, args);
            tab.setTag(info);
            tab.setTabListener(this);
            mTabs.add(info);
            mActionBar.addTab(tab);
            notifyDataSetChanged();
        }

        @Override
        public int getCount() {
            return mTabs.size();
        }

        @Override
        public Fragment getItem(int position) {
            TabInfo info = mTabs.get(position);
            return Fragment.instantiate(mContext, info.clss.getName(), info.args);
        }

        @Override
        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
        }

        @Override
        public void onPageSelected(int position) {
        	if (mViewPager.getCanScroll()) {
        		mActionBar.setSelectedNavigationItem(position);
        		if (getItem(position) instanceof BrowserBookmarksPage ) {
        			mActionBar.getTabAt(position).setIcon(R.drawable.br_selected_bookmarks);
        			mActionBar.getTabAt(position + 1).setIcon(R.drawable.br_unselected_history);
				}else {
					mActionBar.getTabAt(position).setIcon(R.drawable.br_selected_history);
					mActionBar.getTabAt(position - 1).setIcon(R.drawable.br_unselected_bookmarks);
				}
			}
        }

        @Override
        public void onPageScrollStateChanged(int state) {
        }
        

        @Override
        public void onTabSelected(android.app.ActionBar.Tab tab,
                FragmentTransaction ft) {
            	if (mViewPager.getCanScroll()) {
            		Object tag = tab.getTag();
            	for (int i=0; i<mTabs.size(); i++) {
            		if (mTabs.get(i) == tag) {
            			mViewPager.setCurrentItem(i);
            			if (i == 0) {
            				tab.setIcon(R.drawable.br_selected_bookmarks);
            				fg = getItem(tab.getPosition());
            			}else {
            				tab.setIcon(R.drawable.br_selected_history);
            			}
            		}
            	}
			}
        }

        @Override
        public void onTabUnselected(android.app.ActionBar.Tab tab,
                FragmentTransaction ft) {
        	if (mViewPager.getCanScroll()) {
        		Object tag = tab.getTag();
        		for (int i=0; i<mTabs.size(); i++) {
                    if (mTabs.get(i) == tag) {
                        if (i == 0) {
                        	tab.setIcon(R.drawable.br_unselected_bookmarks);
                        }else {
                        	tab.setIcon(R.drawable.br_unselected_history);
                        }
                    }
                }
			}
        }

        @Override
        public void onTabReselected(android.app.ActionBar.Tab tab,
                FragmentTransaction ft) {
        	if (mViewPager.getCanScroll()) {
        		Object tag = tab.getTag();
        	for (int i=0; i<mTabs.size(); i++) {
        		if (mTabs.get(i) == tag) {
        			mViewPager.setCurrentItem(i);
        			if (i == 0) {
        				tab.setIcon(R.drawable.br_selected_bookmarks);
        				fg = getItem(tab.getPosition());
        			}else {
        				tab.setIcon(R.drawable.br_selected_history);
        			}
        		}
        	}
		}
        }
    }
    
    @Override
    public void onBackPressed() {
    	
    	if (!BrowserBookmarksPage.isCanScroll) {
    		super.onBackPressed();
		}else {
			super.onBackPressed();
		}
    }

    private static String makeFragmentName(int viewId, int index) {
        return "android:switcher:" + viewId + ":" + index;
    }

}
